Oct 2019 TIPS TO RESEAL STAMPED CONCRETE
Restoring original stamped concrete can be done by carefully resealing surfaces following best practice suggestions from Sephaku Cement. As with any indoor or outdoor paving, tiling or decked surfaces, with time, exposure to the elements and foot traffic, stamped concrete installations will need some degree of maintenance or refurbishment at any given point in its lifetime. While resealing stamped concrete flooring can be successfully done, special care and attention should be paid when applying a new concrete sealer to ensure a functional and attractive finish.
To follow, see tops tips and best practice advice to effectively reseal stamped concrete installations or concrete floor sealers:
- Begin by Cleaning the SurfaceUsing a general purpose household detergent and a stiff brittle brush or broom, scrub the surface of the stamped concrete , paying careful attention to cracks, grooves and corners of the stamped area. Now, using a high pressure washer, preferably fitted with a rotary surface cleaner attachment, remove dirt, grime, sand and any other debris that may be caught between the grooves and on the surface of the stamped concrete. By using a good pressure washer this will also help to remove old and flaking sealant previously applied. Be sure that all detergent and debris as well as deteriorated – old sealant has been washed from the surface before allowing to dry.
- Less is Always MoreWhen resealing the surface of stamped concrete installations, never be tempted to apply the sealant as a thick layer. Most effective when applied as a thin layer, sealants are engineered to expel moisture from the concrete installation. When the surface is sealed with a layer that is too thick to allow moisture to escape, the moisture becomes trapped between the concrete and the sealant causing a discolouration on the surface of stamped concrete and raises the chances of making bubbles that will wear out very quickly if there is any foot traffic on the concrete, similar to the effects of efflorescence, and will eventually cause the sealant to peel in a flaky mess thats tricky to restore.
- Ready, Steady, Seal!Now that you are ready to seal the surface of your stamped concrete application, select either a water or acrylic based sealer to proceed with. Keep in mind that a water-based sealer typically soaks into the surface of the concrete, where an acrylic sealer coats the surface in a film like membrane. Opting for a water-based solution is often the easier option when sealing concrete but does not always achieve a refurbished look to dated and faded surfaces. Sealing stamped concrete with a solvent acrylic based sealer will however restore tired and distressed stamped concrete surfaces to their former glory, enhancing the colour, sheen and overall lustre of the surface. Ideally applying the sealant using a pump sprayer, which is effective in directing an even and thin film on the surface, as mentioned above it’s important to not apply too much sealant to stamped concrete flooring, trapping in moisture that is preferably able to evaporate.
Requiring very little maintenance if effectively applied, you need only consider resealing your stamped concrete surfaces again in two to three years depending on the volume of foot traffic, exposure to the elements and frequency of contact with heavy bearing weight that will influence the long term strength and durability of the sealant.